Fluid pressure system



R. M. NARDONE' FLUID' PRESSURE SYSTEM Aug. 11, 1942.

Filed Dec. 26, 1940 v Patented Aug 11, 1942 nuro raassuaa SYSTEM RomeoM. Nardone, Westwood, N. J., assignor to Bendix Aviation Corporation,South Bend, Ind.,

a corporation of Delaware Application December 264940, Serial No.371,845

I 2 Claims. This invention relates to fluid pressure systems andparticularly to the control of the direction An object of the inventionis to provide a unitary mechanism by which fluid under pressure may bedirected to any selected one of a plurality of fluid receiving units,but only so long as the pressure of the fluid remains wlthin'apredetermined pressure range. o

Another object of the invention is to provid in a unitary flow directingmechanism of the foregoing character, novel means for automaticallydiverting the flow to a different outlet when the pressure goes beyondthe predetermined pressure range. I v

Another object of the invention is to provide,

in a unitary mechanism of the foregoing character, novel means forvarying the pressure range and thereby selecting the point at which thefluid will be diverted to a different outlet.

' These and other objects and features of the invention are pointed outin the following description in terms of the embodimentthereof whichisshown in the accompanying drawing. It

is to be understood, however, that the drawing is for the purpose ofillustration only, and is not designed as a definition of the limits ofthe invention, reference being had to the appended claims for'thispurpose. I

In the drawing:

Fig. 1 is a top plan or end view of a device embodying the invention;

Fig. 2 is an exploded view of the rotatable parts a Fig. 3 is alongitudinal sectional view:

Fig. 4 is a transverse view along the line 4-4 of Fig. 3;

Figs. 5 and 6 are transverse views of the intermeshing tongues of Fig.2;' and A Fig. 7 is a bottom plan view.

The flow controlling means is shown as being provided with an inlet portI adapted to direct the entering fluid into a chamber provided centrallyof the mechanism and from which chamher the fluid, may be directed intolateral openings in a rotatable hollow spindle 8, at the upper portionof which is another lateral port is (Fig.

4) from which the fluid may emerge into any selected one of the outletports 4 leading to various fluid receiving units. not shown; theselection of the particular outlet being determined by the rotation ofthe handle! pinned to the upper end of the spindle 3 and having aprojecting index element adapted to register with any selected one alongthe upper surface of the valve mechanism as indicated in Fig 1, thelocation of the reference characters corresponding to the angularspacing of the outlets l.- A spring-pressed ball 5 His adapted tocooperate with depressions M in the under surface of the hub i5 of thehandle i and thus yieldably retain the handlejn the selected position.

The hollow spindle 3 terminates in a series of m unevenly spaced tonguesor teeth l6, adapted to mesh with corresponding tongues or teeth I!projecting upwardly from a disk 6 having apertures I therein, thespacing of said apertures I being uniform and corresponding to'thespacing of the It outlets 4.- As shown in Fig. 3, the disk 8 isrotatable upon the flat upper surface of a trans- 1 versely extendingpartition ll shown as integral with the lowersection IQ of the valvehousing. In said lower "section, It. there are two recipro- ZO-cablevalves 8 and ll of the poppet type, each provided with a spring adaptedto yieldably urge its valve into engagement with one of a pair of 30threaded cap-nut 8a, provides a means of ad- 'iustment of the pressureupon the spring of the valve 8 and thereby affords a means forregulating the pressure at which thevalve will open. A similar mechanismmay be provided with the 3.1 cap-nut Ila of the valve Ii, if desired,but it will be apparent as the explanation of the mecha- "nismprogresses that the system may function satisfactorily with. one valvepre-set and the other adjustable at will to accommodate the op- 4eration to varying conditions.

With the foregoing construction in mind, it will be apparent that fluidentering at l passes through holes 2 in spindle l and out through one ofthe four outlets l When handle 5 is turned clockwise to any one of thefour positions, plate valve 6 is carried around with lso that one offour equally spaced holes 1 is'in registry with the relief valve 8. If

the pressure exceeds the valve setting, valve 8.

opens and fluid goes out through outlet l0 When the handle, is turnedanti-clockwise, the first 45 degrees of movement of spindle 3 is nottransmitted as motion to valve plate 6, due to the provision of a 45degree gap in the mating of the reference characters located in a circle55 tongues or teeth, as indicated in Figs. 2, 5 and 6.

The second so degrees oi movent carries plate 6 around so that one orholes '8 is in registry with the second relief valve 5! located 135degrees away from 8. Thus only one valve is exposed to fluid pressure,while the other is closed. It the second valve is set at a higher valuethan the first, it will open only after the pressure'iics increasedcorrespondingly. Thus there is nrovided a means for getting fluid atdiflerent pressures, at the outlet iii, depending upon the direction'or? turning the handle 5.

What is claimed is:

i. a valve mechanism, a pair of excess pressure relief valves nllyclosed by so pressure of diiferent values, a ported plate comtroapplication of pressure to said valves, is third valve registrahle withany selected one of & plura-lity of outlet ports, said third valve alsohaving constant communication with said ported plate,

y dq i e single means for simultaneously shifting sm-u third valve andsaid ported. plate, the excess pressure relief velves being so spacedwith respect to the ports in the plate and coordinated with saidshifting means that on shifting the shifting means in one direction oneof the ports in the plate will register with one of the excess pressurerelief valves whenever the third valve registers with one of theselected outlet ports and when the shifting means is shifted in theopposite direction one of theports in the plat will c eeses rcgism' withthe other excess pressure relief valve whenever the third valveregisters with one oi the selected outlet ports,

in a, valve mechanism, 9. pair of excess pressure roller valves normallyclosed by spring pres= oi different values, at ported platecontrolopplicction or pressure to said valves, 9. third valve:registrahle with any selected one or a plureality or outlet norts, saidthird valve also having constant couioicstion with said ported plate, a.single means for simultaneously shifting s third valve and said portedplate, the excess pressure roller valves being so spaced with respect tothe ports in the plate and coordinated with said shifting means that onshifting the shifting means in one direction one of the ports in thplate will register with one of the excess pressure relief valveswhenever the third valve registers. with one of the selected outletports and when the shifting means is shifted in the opposite directionone of the ports in the plate will register with the other excesspressure relief valve whenever the third valve registers with one of theselected outlet ports, said single means including a driving memberwhich produces difiercnt degrees of movement of said ported plate,according to the direction or movement of said driving member, and inresponse to equal degrees of movement of said driving member.

ROMEO M. NARDONE.

